Olive Barrymore Kopelman is going to be a big sister! The Hollywood tot's famous mom, Drew Barrymore, is pregnant again, her rep confirms to Us Weekly. The baby-to-be is the second for the actress-producer, 38, and husband Will Kopelman, whose daughter Olive is just 13 months old.

Although Barrymore's rep had no immediate comment, there was ample evidence over the weekend: The former child star was among the attendees at the LACMA Art+Film Gala honoring Martin Scorcese and David Hockney on Saturday, Nov. 2, and Barrymore's long, flowing dress seemed to strategically designed to conceal a burgeoning bump.

The speedy second pregnancy shouldn't come as a huge surprise: Just last month, she told Jay Leno on The Tonight Show that she "very much" wanted to have another child and get pregnant "right away." Barrymore, who wed art consultant Kopelman in June 2012, explained: "I grew up as an only child, and although that really works for some people and for some parents that's the way they want to do it."

The Flower Cosmetics founder's inspiration? The Griswolds of the National Lampoon Vacation flicks. "I want the kids in the back rolling their eyes at mom and dad. I want Rusty and Audrey, theme parks and the whole nine."